interface SpeakHello {
    void speak();
}
class HelloMachine {
    public void turnOn(SpeakHello hello) {
       hello.speak();
    }
}
public class Example7_3 {
   public static void main(String args[]) {
      HelloMachine machine = new HelloMachine();
      machine.turnOn( new SpeakHello() {   //和接口SpeakHello有关的匿名类
                     public void speak() {
                       System.out.println("hello,you are welcome!");
                     }
                   }
                 );
      machine.turnOn( new SpeakHello() {  //和接口SpeakHello有关的匿名类
                        public void speak() {
                            System.out.println("你好，欢迎光临!");
                         }
                       }
                     );
   }
}
